Note 4 - Investments In and Advances to Real Estate Joint Ventures - Investment Details (Details) - USD ($) $ in Millions		Sep. 30, 2020	Dec. 31, 2019
Kim Pru and Kim Pru II [Member]
Average ownership interest	[1]	15.00%
The company's investment	[1]	$ 176.8	$ 169.5
Kimco Income Fund [Member]
Average ownership interest	[1]	48.60%
The company's investment	[1]	$ 176.9	175.0
CPP [Member]
Average ownership interest		55.00%
The company's investment	[1]	$ 156.7	151.7
Other Joint Venture Programs [Member]
The company's investment		79.3	81.9
All Equity Method Investments [Member]
The company's investment	[2]	$ 589.7	$ 578.1

[1] The Company manages these joint venture investments and, where applicable, earns property management fees, construction management fees, property acquisition and disposition fees, leasing management fees and asset management fees.

[2] Representing 97 property interests and 21.2 million square feet of GLA, as of September 30, 2020, and 98 property interests and 21.3 million square feet of GLA, as of December 31, 2019.